1028401 has 4 divisors (see below), whose sum is σ = 1121904. Its totient is φ = 934900.

The previous prime is 1028393. The next prime is 1028411. The reversal of 1028401 is 1048201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1028401 - 2³ = 1028393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46735 + ... + 46756.

It is an arithmetic number, because the mean of its divisors is an integer number (280476).

2^1028401 is an apocalyptic number.

1028401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1028401 is a deficient number, since it is larger than the sum of its proper divisors (93503).

1028401 is an equidigital number, since it uses as much as digits as its factorization.

1028401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93502.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1028401 is about 1014.1010797746. The cubic root of 1028401 is about 100.9378763800.

The spelling of 1028401 in words is "one million, twenty-eight thousand, four hundred one".